Door lock



H. M. M KAY March 19, 1963 DOOR LOCK Filed March 2, 1961 22 I0 FIG].

INVENTOR, HARRY M. MO-KAY BY Caz w. wwol. Pour-EM ATTORNEYS Sfidlfii?Patented Mar. 159, i963 3,081,617 D-(MBR DUCK Harry M. McKay, Warrenton,Md, assignor to The Einldey Company, Warrenton, Mo a corporation ofMissouri Filed ldar. 2, 1961, Ser. No. 92,954 filaims. (Ci. 70153) Thisinvention relates generally to improvements in a door lock, and moreparticularly to an improved flush type door lock adapted for use onvehicle body doors, such as truck doors and the like.

it is an important objective of the present invention to realize a doorlock of the type adapted to be mounted flush in a vehicle body doorwhich is simple and durable in construction, economical to manufactureand eficient in operation.

An important objective is achieved by the provision of an improvedmounting of a paddle handle in the cup member, and the disposition of akey-operated lock on the handle relative to a latch element in the cup,such structural arrangement enabling the flush type door lock to beconveniently utilized on the left or right side of a door.

Another important objective is afforded by an improved structure of abolt-receiving channel on'the cup, and by the provision of a member inthe cup that cooperates to define and enclose the bolt channel.

Still another important object is realized by the provision of a memberthat partially defines the bolt channel as described previously, andalso provides means for hinging the handle and for latching thekey-operated lock carried by the handle.

Yet another important objective is realized by providing a flush typedoor lock construction in which the maximum number of parts can be madeof sheet metal for extreme simplicity and economy of manufacture.

Another important objective is achieved by the improved structure of aflush type door lock that enables a key-operated lock to be mounted andcarried by the paddle handle, and yet protected and shielded fromunwanted or unintentional access and manipulation when the handle islatched.

The foregoing and numerous other objects and advantages of the inventionwill more clearly appear from the following detailed description of apreferred embodiment, particularly when considered in connection withthe accompanying drawing, in which:

PEG. 1 is a front elevational view of the door lock mounted in a vehiclebody door;

PEG. 2 is a cross sectional view as seen along line 22 of FIG. 1;

FIG. 3 is a cross sectional view as seen along line 3-3 of HG. 1,illustrating the paddle handle as closed and locked, and

FIG. 4 is a cross sectional view similar to FIG. 3, but illustrating thepaddle handle as unlocked and opened.

Referring now by characters of reference to the drawing, it is seen thatthe flush type door lock includes a cup element generally indicated at1-1} which includes a back wall 11, opposed side walls 12, integral andopposed end walls 13, and a peripheral flange lid. The back wall 11 isprovided with an elongate recess 15 extending lengthwise between endwalls 13, yet located centrally between side walls 12.

Attached to the rear face of back wall 11 is a tubular casing 16 thatcovers the recess 15. The tubular casing 16 is closed at its rear end 17and open at its front end 18.

Slidably mounted within tubular casing 16 is an elongate bolt Acompression spring 21 is located within tubular casing 16, one end ofspring 21 abutting the rear casing end 17 and the opposite end abuttingthe rear end of bolt 2% The spring 21 tends to urge the bolt 26outwardly through the open end 18 of tubular casing 16.

When mounted in a vehicle body door 22 such as a truck door, or thelike, the cup element interflts a comparable recess along one edge ofthe door 22 so that the peripheral flange 1d lies flush with the outerdoor surface. The side door jamb 23 is provided with a keeper notch 24into which the outer end of bolt 2% extends when the door 22 is closed.As is usual, the outer end of bolt 20* is provided with a rearwardlycurving cam face 25 which is adapted to engage the side door jamb 23when the door is closed so as to urge the bolt Zil inwardly of tubularcasing 16 against the loading of spring 21. When the bolt 2% is alignedwith keeper notch 24, the spring 21 operates to plunge the bolt 2% intonotch 24. The bolt 2%} then retains the door in its closed position.

The bolt 2%) is provided with a recess 25 that communicates with therecess 15 formed in back wall 11 of cup element 19. The bolt recess 26is partially defined by a rear end abutment 27. The purpose andfunctional advantages adorded by the bolt recess 26 and abutment 27 willbecome fully apparent upon later description of parts.

A U-shaped mounting plate 3% is located within the cup element it TheU-shaped mounting plate 30 includes a web 31 attached to the back wall11 in a position to cover the back wall recess 15 immediately adjacentthe compression spring 21 and the rear portion of bolt 20. The mountingplate 3d also includes an outwardly projecting latch flange 32 that isformed integrally with web 31 and extends substantially the entire widthbetween side walls 12 of cup element id. The latch flange 32 is providedwith a slot 33 which constitutes a keeper as will later appear.

The mounting plate 3% also includes a front hinge flange 34 formedintegrally with web 31 and extending outwardly substantially to theouter rim of cup element 10. The hinge flange 34 extends transverselybetween the side walls 12. of cup element It and is provided with arolled bead 35 located closely adjacent one of the end walls 13 of cupelement ll Thus it is seen that the mounting plate 30 substantiallycovers the recess 15 formed in the back wall 11.

A paddle handle 36 formed of a flat sheet material is provided with afront rolled edge 37 that is swivelly mounted on the hinge flange 34. Inits closed position, the paddle handle 36 overlies the U-shaped mountingplate 39, the handle abutting the outer end of latch flange 32 andextending beyond such latch flange '32 toprovide a lip 40 at its rearmargin adapted to be gripped by an operators fingers when inserted intothe cup element 16* through the space provided between the one end wall13 and the lip 40.

As is best seen in FIGS. 1 and 2, the paddle handle 36 extendssubstantially the entire width between the side walls 12 of cup element10. More particularly, the sides of the paddle handle 36 are eachprovided with a downturned flange 41 closely adjacent one of the sidewalls 12, the down-turned handle flange 41 extending between the latchflange 32 and the hinge flange 34 of the U-shaped mounting plate 3!).

Attached to the inner face of paddle handle .36 is an inwardlyprojecting tongue 42, the tongue 42 extending through a narrow slot 43formed in the U-shaped mounting plate 39 and extending through the backplate recess 15 into the bolt recess 26. As is best seen in FIGS. 3 and4, the tongue 42 engages the bolt abutment 27 and operates selectivelyto extend or retract the bolt 20 upon swing movement of paddle handle36.

Secured to the paddle handle 36 is a key-operated lock 44 which islocated within the mounting plate 30 when the paddle handle 36 isclosed. The key-operated lock 44 includes a latch arm 4-5 that isadapted to interfit the latch slot 33 in the latch flange 32 when thelook 44 is actuated by a key to a locked position.

A pair of bolts 46 are located between the latch flange 32 and hingeflange 34, and are utilized to secure the mounting plate St} to the backwall 11 of cup element It). The bolts 46 extend through the web 31 ofthe mounting plate 30, extend through the back wall 11, and can beutilized to fix the unit to the vehicle body door 22 as is shown inFIGS. 3 and 4. It will be readily apparent that when the paddle handle36 is closed and locked, access to the bolt 46 is absolutely precluded.

It is thought that the operation and functional ad vantages of the flushtype door lock has become fully apparent from the foregoing detaileddescription of parts, but for completeness of disclosure, such operationwill be briefly described. It will be assumed that lock 44 is unlatchedso as to permit a free swinging movement of paddle handle 36 and thatthe door is initially closed as is shown in FIG. 3.

First, to open the vehicle door 22, the operator merely grips the lip 4bof paddle handle 36 and pulls outwardly to swivel the front margin 37 onthe hinge flange 34 of the mounting plate 30. As the paddle handle 36swings outwardly, the tongue 42 engages the bolt abutment 27 and movesthe bolt 2t) rearwardly into the tubular casing 16 against the loadingof the compression spring 21 until the bolt end 25 clears the keepernotch 24. The vehicle body door 22 then swings open upon continuedpulling by the operator on the paddle handle 36.

To close the door, the operator can merely slam the door shut withouttouching the paddle handle 36. As the cam face 25 of the bolt end 20engages the side door jamb 2 3, the bolt 2% is cammed inwardly intoretracted position. When the bolt 20 is aligned with the keeper notch24, the spring 21 urges the bolt 2t] outwardly into interfitting lockposition. The paddle handle 36 does not move at all because of the lostmotion provided between the bolt 20 and tongue 42 as a result of thelength of bolt notch 26.

However it will be realized that the operator can condition the lockhimself in order to close the door merely by reversing the sequence ofsteps previously described. In other words, the operator swings thepaddle handle 36 outwardly to the position illustrated in FIG. 4 inorder to retract the bolt 2% fully within the tubular casing 16. Then,while holding the paddle handle 36 in this position, the operator canclose the door, and when fully closed, can release the handle 36 so thatthe spring 21 urges the bolt 20 outwardly into the keeper notch 24.Simultaneously, the spring 21 acting through the bolt 20 and tongue 42swings the paddle handle 36 to its closed position as shown in FIG. 3.

To lock the vehicle door 22 positively in its closed position, the lock4-4 is conditioned by a key to move the lock element 45 into slot 33formed in the latch flange 32. When so conditioned, the paddle handle 36cannot be swung open, and consequently, the bolt 20 cannot be moved outof the keeper notch 24.

It is clear that this flush type door lock is virtually tamper proof.When the paddle handle 36 is closed and is locked in such closedposition by lock 44, it is seen that access to the body of the cylindertype lock 44, access to tongue 42, access through the back wall recess15 and access to the bolt 20, all are prevented by the particularstructural arrangement of the mounting plate 39 and the paddle handle 36within the cup element 10. The unit can be conditioned for opening andclosing the body door 22 simply upon moving locking element 45 out ofoperative engagement with the latch flange 32 by actuating the lock 4-4with an appropriate key.

Although the invention has been described by making detailed referenceto a single preferred embodiment, such detail is to be understood in aninstructive, rather than in an restrictive sense, many variants beingpossible within the scope of the claims hereunto appended.

I claim as my invention:

1. A door lock comprising a cup element having a back wall, the backwall being provided with a recess, a guide means on the rear of the backwall, a bolt in said guide means and overlapping said recess, a hingeflange attached in the cup element at one end of the cup element andextending substantially the width of the cup element, a paddle handlehingedly mounted on said hinge flange, means connected to said handleextending through said recess to engage the bolt for bolt actuation, alatch flange attached in the cup element and disposed adjacent the freeend of the handle, the latch flange extending substantially the width ofthe cup element, and a key-operated lock supported by the handle, thesaid key-operated lock selectively engaging the latch flange to retainthe handle in a closed position, the said key-operated lock beinglocated between the handle and back wall and located between the hingeflange and said latch flange so as to be substantially shielded.

2. A door lock comprising a cup element having a back wall, the backwall including an elongate recess, a tubular guide means on the rear ofsaid back wall and communicating with said recess, said guide meanshaving an end opening, a bolt slidably mounted in said guide means andextensible through the end opening, the bolt including an abutmentaccessible through said recess, a hinge flange secured to the back wallat one end of the cup element and extending substantially the width ofsaid cup element across one end of said recess, a latch flange securedto the back wall and extending substantially the width of the cupelement beyond the other end of said recess, a paddle handle hingedlyattached to the top of the hinge flange, said handle normally extendingover the recess and projecting over and close to the top of the latchflange, a tongue connected to the handle and extending through therecess to engage the bolt abutment, and a key-operated lock carried bythe handle and normally located in the cup element between said flangesin shielded relation, the keyoperated lock including an elementselectively engageable with the latch flange to retain the handle in aclosed position.

3. A door lock comprising a cup element having a back wall, the backwall being provided with an elongate recess, a tubular guide means onthe rear of said back wall and communicating with said recess, a boltslidably mounted in said guide means, a substantially U-shaped platemember including a hinge flange at one end, a latch flange at the otherend and an interconnecting web, the U-shaped plate member being securedto the back wall with the web overlying the recess, a paddle handlehingedly attached to the hinge flange and extending over the latchflange, means connected to the handle extending through the recess toengage the bolt for bolt actuation, and a key-operated lock carried bythe handle and normally located in the cup element between said flanges,the key-operated lock includi ing an element selectively engageable withthe latch flange to retain the handle in a closed position. 4. A doorlock comprising a cup element having a back i wall, the back wallincluding a recess, a tubular guide 1 member on the rear of said backwall and communicating with said recess, a bolt reciprocatively mountedin said guide means, the bolt including an abutment accessible throughsaid recess, a substantially U-shaped plate member having opposedflanges extending substantially the width of the cup element and a web,the Web being connected to the back wall, a paddle handle hingedlyconnected to the top of one flange and normally extending close to andacross the top of the other flange, a tongue attached to the handle andextending through said recess into engagement with the bolt abutment forbolt actuation upon hinged movement of said handle, and a keyoperatedlock mounted on said handle and disposed in said cup element betweensaid flanges in shielded relation, the

1 a 5 said key-operated lock including an element selectively engagingthe said other flange to retain the handle in a closed position.

5. A door lock comprising a cup element adapted to fit into a door withits open front presented outwardly with respect to one face of the door,the cup element having a back wall provided with a recess, a tubularguide means on the rear of said back wall and communicating with saidrecess, said guide means having an end opening, a bolt slidably mountedin the guide means and extensible through the end opening into lockingposition, spring means normally tending to urge the bolt into lockingposition, the bolt including an abutment, accessible through saidrecess, a substantially U-shaped plate member including a hinge flangeat one end having a rolled head, a latch flange at the other end and aninterconnecting web, the U-shaped plate member being secure to the backwall with the web overlying the recess and the flanges extendingtransversely of the open front of the cup, a paddle handle hingedlymounted on the head of said hinge flange and extending over the end ofsaid latch flange, the paddle handle including side flanges extendingbetween the hinge flange and the latch flange, a tongue connected to thehandle and extending through the U-shaped plate member and through saidrecess into engagement with the bolt abutment for bolt actuation, thesaid latch flange being provided with a slot, and a key-operated lockcarried by the handle and located in the cup element between said hingeand latch flanges, the key-operated lock element including an armselectively engageable in the slot of the latch flange to retain thehandle in the closed position.

References Cited in the file of this patent UNITED STATES PATENTS2,055,688 Halinka Sept. 29, 1936 2,642,300 Pelcin June 16, 19532,987,908 Pelcin June 13, 1961

3. A DOOR LOCK COMPRISING A CUP ELEMENT HAVING A BACK WALL, THE BACKWALL BEING PROVIDED WITH AN ELONGATE RECESS, A TUBULAR GUIDE MEANS ONTHE REAR OF SAID BACK WALL AND COMMUNICATING WITH SAID RECESS, A BOLTSLIDABLY MOUNTED IN SAID GUIDE MEANS, A SUBSTANTIALLY U-SHAPED PLATEMEMBER INCLUDING A HINGE FLANGE AT ONE END, A LATCH FLANGE AT THE OTHEREND AND AN INTERCONNECTING WEB, THE U-SHAPED PLATE MEMBER BEING SECUREDTO THE BACK WALL WITH THE WEB OVERLYING THE RECESS, A PADDLE HANDLEHINGEDLY ATTACHED TO THE HINGE FLANGE AND EXTENDING OVER THE LATCHFLANGE, MEANS CONNECTED TO THE HANDLE EXTENDING THROUGH THE RECESS TOENGAGE THE BOLT FOR BOLT ACTUATION, AND A KEY-OPERATED LOCK CARRIED BYTHE HANDLE AND NORMALLY LOCATED IN THE CUP ELEMENT BETWEEN SAID FLANGES,THE KEY-OPERATED LOCK INCLUDING AN ELEMENT SELECTIVELY ENGAGEABLE WITHTHE LATCH FLANGE TO RETAIN THE HANDLE IN A CLOSED POSITION.